<h2>Why is this an issue?</h2>
<p>Each package in a Java project should include a <code>package-info.java</code> file. The purpose of this file is to document the Java package using
javadoc and declare package annotations.</p>
<h3>Compliant solution</h3>
<pre>
/**
* This package has non null parameters and is documented.
**/
@ParametersAreNonnullByDefault
package org.foo.bar;
</pre>

